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LTC3545/LTC3545-1

35451fb

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

Input Supply Voltage.................................... –0.3V to 6V

RUNx, PGOODx............................. –0.3V to (VIN + 0.3V)

VFBx, SYNC/MODE ........................ –0.3V to (VIN + 0.3V)

SWx .............................................. –0.3V to (VIN + 0.3V)

P-Switch Source Current (DC) (Note 8) ...................1.1A

(Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

General Characteristics

VIN

Input Voltage Range

●

2.25

5.5

VFBx

Regulated Feedback Voltage (Note 5)

TA = 25°C

0°C ≤ TA ≤ 85°C

LTC3545IUD; –40°C < TA < 125°C

●

0.592

0.588

0.6

0.608

0.612

ΔVFBx

Reference Voltage Line Regulation (Note 5)

VIN = 2.25V to 5.5V

●

0.08

0.15

%/V

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = PVIN = 3.6V unless otherwise noted. (Note 2)

N-Channel Sink Current (DC) (Note 8) .....................1.1A

Peak SW Sink and Source Current (Note 8) .............1.3A

Operating Junction Temperature Range

(Note 2) ............................................. –40°C to 125°C

Storage Temperature Range................... –65°C to 125°C

LTC3545

LTC3545-1

16 15 14 13

UD PACKAGE

16-LEAD (3mm

3mm) PLASTIC QFN

TOP VIEW

SW1

PGOOD1

RUN2

PGOOD2

VFB2

VFB3

RUN3

SYNC/MODE

TJMAX = 125°C, θJA = 55°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

16 15 14 13

TOP VIEW

UD PACKAGE

16-LEAD (3mm

3mm) PLASTIC QFN

SW1

PGOOD1

RUN2

PGOOD2

VFB2

VFB3

RUN3

PGOOD3

TJMAX = 125°C, θJA = 55°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

PIN CONFIGURATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3545EUD#PBF

LTC3545EUD#TRPBF

LCSR

16-Lead (3mm

× 3mm) Plastic QFN

–40°C to 125°C

LTC3545IUD#PBF

LTC3545IUD#TRPBF

LCSR

16-Lead (3mm

× 3mm) Plastic QFN

–40°C to 125°C

LTC3545EUD-1#PBF

LTC3545EUD-1#TRPBF

LDDP

16-Lead (3mm

× 3mm) Plastic QFN

–40°C to 125°C

LTC3545IUD-1#PBF

LTC3545IUD-1#TRPBF

LDDP

16-Lead (3mm

× 3mm) Plastic QFN

–40°C to 125°C

Consult LTC Marketing for parts speciﬁed with wider operating temperature ranges. *The temperature grade is identiﬁed by a label on the shipping container.

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

For more information on lead free part marking, go to: http://www.linear.com/leadfree/

For more information on tape and reel speciﬁcations, go to: http://www.linear.com/tapeandreel/

ORDER INFORMATION

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